CN219053168U

CN219053168U - Frock is used in encapsulation circuit board welding

Info

Publication number: CN219053168U
Application number: CN202222565680.4U
Authority: CN
Inventors: 薛明宇; 徐琨
Original assignee: Nanjing Institute of Mechatronic Technology
Current assignee: Nanjing Institute of Mechatronic Technology
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2023-05-23
Anticipated expiration: 2032-09-27

Abstract

The utility model discloses a tool for welding a packaging circuit board, which comprises a base, wherein a rocker arm is rotationally connected to the base, the tail end of the rocker arm is rotationally connected with a pressing plate, and the pressing plate is used for pressing a cover plate on the packaging circuit board; the rocker arm is connected with the base through a rotating shaft, a worm wheel coaxial with the rotating shaft is arranged on the rocker arm, a worm meshed with the worm wheel is arranged on the base, and the worm is connected with a motor. The utility model has the advantages that the automatic compaction of the cover plate of the packaging circuit board is realized, the labor force is liberated, and the tooling is not required to be disassembled after the spot welding of the cover plate is finished, thereby being beneficial to improving the production efficiency.

Description

Frock is used in encapsulation circuit board welding

Technical Field

The utility model relates to the technical field of processing of packaging circuit boards, in particular to a tool for welding a packaging circuit board.

Background

In some applications, it is desirable to package a circuit board that integrates chips and various components. In the prior art, a metal cover plate is generally used to cover the circuit board in the packaging process of the circuit board, and then the edge of the cover plate is welded by laser so as to fix the cover plate on the circuit board. The welding process comprises two steps, namely, firstly, spot welding a plurality of positions on the edge of the cover plate, and then, completely welding the cover plate (namely, two procedures of spot welding and ring welding). In the process of welding, the problems of tilting or uneven cover plate and the like are required to be solved by a manual correction method, and before the first spot welding step, the cover plate is required to be fixed in order to ensure the position stability of the cover plate during welding.

Therefore, package soldering of circuit boards requires two soldering steps to be performed on two devices. If one device is used for welding, after the spot welding is completed in the first welding step, the tool for fixing the cover plate is taken down, and then the circuit board subjected to the spot welding and the manual correction is welded in the second step, so that the working procedure is complicated, and the processing efficiency is difficult to improve.

Disclosure of Invention

The utility model provides a tool for welding a packaging circuit board, which has the advantages that the automation of the compression of a cover plate of the packaging circuit board is realized, the labor force is liberated, and the tool is not required to be disassembled after the spot welding of the cover plate is finished, so that the production efficiency is improved.

The technical scheme includes that the tooling for welding the packaging circuit board comprises a base, wherein a rocker arm is rotatably connected to the base, the tail end of the rocker arm is rotatably connected with a pressing plate, and the pressing plate is used for pressing a cover plate on the packaging circuit board; the rocker arm is connected with the base through a rotating shaft, a worm wheel coaxial with the rotating shaft is arranged on the rocker arm, a worm meshed with the worm wheel is arranged on the base, and the worm is connected with a motor.

The utility model is further characterized in that a bottom plate is arranged at the bottom of the base, and a plurality of mounting holes are formed in the bottom plate.

The utility model is further characterized in that the bottom of the pressing plate is provided with a cushion pad, and the cushion pad is made of rubber, silica gel or cork.

The utility model is further characterized in that the pressing plate and the buffer pad are provided with detection holes, a proximity switch is arranged in the detection holes, and an output signal of the proximity switch is output to another control device and participates in controlling the motor.

In summary, the beneficial effects of the utility model are as follows:

1. according to the utility model, the rocker arm is driven by the motor and the pressing plate is driven to press the cover plate of the packaging circuit board, so that manual pressing is not needed, and the pressing work of the cover plate of the packaging circuit board is facilitated;

2. after the cover plate of the packaging circuit board completes the electric welding step, the motor reverses, the rocker arm is driven and the pressing plate is driven to leave the packaging circuit board, meanwhile, the rocker arm and the pressing plate move to the side direction to a position which does not interfere with the packaging circuit board, at the moment, a worker can use a tool to correct the upper cover plate of the packaging circuit board, after the correction is completed, the packaging circuit board is directly subjected to ring welding (complete welding on one circle of the cover plate of the packaging circuit board), and the rocker arm and the pressing plate cannot interfere with the correction and ring welding on the cover plate of the packaging circuit board, so that the two welding steps can be completed on one welding device, and a tool is not required to be disassembled, thereby simplifying the working procedures in the cover plate welding process of the packaging circuit board, and being beneficial to improving the processing efficiency;

3. the proximity switch is arranged on the pressing plate, when the motor is out of control or the program selection is wrong, the pressing plate presses the packaging circuit board, and then the motor still acts, and at the moment, the proximity switch outputs a signal to control the motor to be powered off, so that the packaging circuit board is protected, and the packaging circuit board is prevented from being damaged by overvoltage.

Drawings

FIG. 1 is a schematic overall structure of an embodiment of the present utility model;

FIG. 2 is a schematic diagram showing the connection between a pressure plate and a rocker arm in an embodiment of the present utility model;

fig. 3 is a schematic diagram of a proximity switch mounting location embodying an embodiment of the present utility model.

In the figure, 1, a base; 2. a bottom plate; 3. a mounting hole; 4. a rocker arm; 5. a pressing plate; 6. a buffer plate; 7. a detection hole; 8. a proximity switch; 9. a worm wheel; 10. a worm; 11. and a motor.

Detailed Description

The following describes in detail the embodiments of the present utility model with reference to the drawings.

Examples: referring to fig. 1-3, a tool for welding a packaging circuit board comprises a base 1, wherein a rocker arm 4 is rotatably connected to the base 1, the tail end of the rocker arm 4 is rotatably connected with a pressing plate 5, and the pressing plate 5 is used for pressing a cover plate on the packaging circuit board; the rocker arm 4 is connected with the base 1 through a rotating shaft, a worm wheel 9 coaxial with the rotating shaft is arranged on the rocker arm 4, a worm 10 meshed with the worm wheel 9 is arranged on the base 1, and the worm 10 is connected with a motor 11.

Before spot welding, the packaging circuit board to be welded is firstly placed on a workbench, and then the motor 11 works to move the pressing plate 5 above the cover plate to press the cover plate. Then the welding equipment works to spot-weld the cover plate on the packaging circuit board so as to preliminarily fix the cover plate on the circuit board, after the spot welding is finished, the motor 11 reverses, the rocker arm 4 is driven, the pressing plate 5 is driven to leave the packaging circuit board, and meanwhile, the rocker arm 4 and the pressing plate 5 move to a position where the side direction does not interfere with the packaging circuit board. At this time, the staff can use the instrument to revise the apron on the encapsulation circuit board, and revision work includes that the apron perk, the swell etc. circumstances are inspected and handled, and after the processing, welding equipment carries out the circle to the apron on the encapsulation circuit board and welds, carries out complete welding to the position of a week of apron promptly.

The bottom of the base 1 is provided with a bottom plate 2, the bottom plate 2 is provided with a plurality of mounting holes 3, the mounting holes 3 are waist-shaped, and when the welding device is used, the bottom plate 2 is mounted in a workbench on the welding device through bolts and is positioned on one side of a to-be-welded packaging circuit board.

In order to buffer the pressure of the pressing plate 5 to the packaging circuit board, a cushion pad is arranged at the bottom of the pressing plate 5, the cushion pad is made of rubber, silica gel or cork, and the cushion pad is attached to the bottom of the pressing plate 5 in a glue adhesion mode.

The control of the motor 11 is controlled by a PLC controller which is additionally arranged, and the motor 11 selects a stepping motor. In general, for the same batch of packaging circuit boards, the heights of the cover plates are the same, so that the cover plates can be pressed by directly controlling the steps of the stepping motor 11 through a program. For the packaged circuit boards with different heights, different programs are set to control the motor 11. When the wrong program or the time control of the motor 11 is selected, the motor 11 continuously works to cause the overvoltage of the circuit board to damage the circuit board. Therefore, the pressure plate 5 and the cushion pad are provided with the detection holes 7, the detection holes 7 are internally provided with the proximity switch 8, the output signals of the proximity switch 8 are output to another control and participate in the control of the motor 11, the proximity switch 8 selects the capacitive proximity switch 8, the detection head of the capacitive proximity switch 8 is sunk in the cushion pad, namely, the height of the detection head of the proximity switch 8 is higher than the height of the bottom surface of the cushion pad. When the pressing plate 5 normally presses the cover plate, the compression degree of the buffer cushion is low, the proximity switch 8 cannot be triggered at the moment, when the pressing plate 5 continues to press down, the buffer cushion deforms and compresses, the proximity switch 8 is triggered, the motor 11 is powered off by controlling the relay action arranged in the power supply loop of the motor 11, and the circuit board is prevented from being crushed.

The welding of the packaging circuit board usually adopts laser welding, and the common equipment is a glove box, so the tool for welding the packaging circuit board can be applied to the glove box.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and improvements could be made by those skilled in the art without departing from the inventive concept, which falls within the scope of the present utility model.

Claims

1. The tool for welding the packaging circuit board is characterized by comprising a base (1), wherein a rocker arm (4) is rotationally connected to the base (1), the tail end of the rocker arm (4) is rotationally connected with a pressing plate (5), and the pressing plate (5) is used for pressing a cover plate on the packaging circuit board; the rocker arm (4) is connected with the base (1) through a rotating shaft, a worm wheel (9) coaxial with the rotating shaft is arranged on the rocker arm (4), a worm (10) meshed with the worm wheel (9) is arranged on the base (1), and the worm (10) is connected with a motor (11).

2. The tooling for welding the packaging circuit board according to claim 1, wherein a bottom plate (2) is arranged at the bottom of the base (1), and a plurality of mounting holes (3) are formed in the bottom plate (2).

3. The tooling for welding the packaging circuit board according to claim 2, wherein a cushion pad is arranged at the bottom of the pressing plate (5), and the cushion pad is made of rubber, silica gel or cork.

4. The tooling for welding the packaging circuit board according to claim 3, wherein the pressing plate (5) and the buffer pad are provided with detection holes (7), a proximity switch (8) is installed in the detection holes (7), and an output signal of the proximity switch (8) is output to another control and participates in controlling the motor (11).